Depending on the cam, it's probably ground 4 degrees ahead, so if you install it dot to dot, it will probably be 4 degrees advanced already. Comp grinds all their street type cams 4 degrees advanced, I have seen it on the Iskys I have degreed lately as well. As far as whether it's an advantage to advance it another 4,, you don't give enough info, LSA, compression, car weight, gear, converter, ECT.also, if you start moving it around, you need to check piston/valve for sure, you should be anyway. As far as installing it "dot to dot", I kinda figure if it's worth changing cams, it's worth degreeing it, but others may see things differently. I sure as he'll don't see any point in advancing a cam if I don't know where it is in the first place...